Universal Access To All Knowledge
Home Donate | Store | Blog | FAQ | Jobs | Volunteer Positions | Contact | Bios | Forums | Projects | Terms, Privacy, & Copyright
Search: Advanced Search
Anonymous User (login or join us)
Upload

Reply to this post | See parent post | Go Back
View Post [edit]

Poster: Madhavananda Date: Jun 4, 2005 12:55am
Forum: movies Subject: Re: there are many many other public domain movies and TV shows

In SmartFTP, I recommend using the Global Queue. Go to the folder where the upload is supposed to go, right click on the empty space, Upload > Global Queue > Select Files.

Global Queue auto-resumes if the upload is broken. I have 100KB/s upstream, and I've uploaded some 40 GB in the last two weeks without having to pay all that much attention to it.

Tools > Settings > Transfer > Limits, you can even cap your upload to 2/3 of your maximum if you want. Actually, you can also do that in the Global Queue window (comes up with CTRL+Q). And did I mention, you can also select how many threads (ie. how many simultaneous uploads) you want to use. Extremely handy.

However I wonder if one indeed just grabs stuff from DVDs, whether one should just upload it as it is or shrink it to ca. 3500kbps VBR or something. My originals are DV and I have to compress them anyway, so it doesn't make that much of a difference to me. Any thoughts?

Reply to this post
Reply [edit]

Poster: Administrator, Curator, or Staffakb Date: Jun 4, 2005 1:11am
Forum: movies Subject: Re: there are many many other public domain movies and TV shows

However I wonder if one indeed just grabs stuff from DVDs, whether one should just upload it as it is or shrink it to ca. 3500kbps VBR or something. My originals are DV and I have to compress them anyway, so it doesn't make that much of a difference to me. Any thoughts?

I think uploading the ripped DVD is the way to go, as re-encoding a DVD at a different bitrate compounds digital artifacts. You get something akin to analog generation loss. This is an "archive" after all, we should strive for the best possible quality. Dual layer DVD writers are already pretty common, in a few years people will appreciate having the best quality possible.

Skip recommended removing the navigation track from the ripped VOB, basically this involves demultiplexing the video and audio tracks and then remultiplexing them. This yields a plain mpeg2 file as opposed to a VOB. I use Linux mjpegtools to do that, I believe Skip said he uses a program called MPEG-VCR on Windows.

Reply to this post
Reply [edit]

Poster: moxey Date: Jun 4, 2005 2:05am
Forum: movies Subject: Re: there are many many other public domain movies and TV shows

i belive the best possible files should be uploaded as well for the archive.
one more question:
i use pinnacle studio 8 to capture video.
it records to a very large avi file.
then i compress it to mpeg2 file.
the result is very good.but takes some time to record and decode.
is there an easier way to rip from a dvd and convert to mpeg2?
i,m a novice to all this.

Reply to this post
Reply [edit]

Poster: Administrator, Curator, or Staffakb Date: Jun 4, 2005 2:40am
Forum: movies Subject: Re: there are many many other public domain movies and TV shows

See this post from Skip. He recommends DVD Decrypter to transfer the files on the DVD to hard drive. The resulting file is a "VOB". It is MPEG2 plus extra stuff specific to DVD players.

He then uses Womble's MPEG-VCR to do any editing and produces a plain MPEG2 file from the VOB. Its important to emphasize that this is not a conversion, it removes extra information. Its important to understand this because conversion, or reencoding, results in quality loss.

This method will result in an MPEG2 file with video quality digitally identical to that of the DVD. The method you described, capturing w/ Pinnacle to AVI (analog generation loss + lossy digital compression) and then encoding to MPEG2 (lossy compression again), results in a degradation of quality.

Hope that's helpful.

Reply to this post
Reply [edit]

Poster: A/V Geek Skip Date: Jun 4, 2005 3:07am
Forum: movies Subject: Re: there are many many other public domain movies and TV shows

Also, it's faster to do it this way - ripping MPEG files from the DVD can be pretty zippy with a fast DVD drive.

Before going through this process and uploading, send me an email (skip@avgeeks.com) with the title of the film, just to make sure that it is public domain. You can't always go by other PD websites - those sites may be willing to take chances on films that are in a grey area, where the IA won't. Also changes in copyright laws have made some films that were previously considered PD (mostly foreign works) that are now under copyright.

Skip

Reply to this post
Reply [edit]

Poster: moxey Date: Jun 4, 2005 4:00am
Forum: movies Subject: Re: there are many many other public domain movies and TV shows

thanks to all you for your help.
and an email has been sent

Reply to this post
Reply [edit]

Poster: Madhavananda Date: Jun 4, 2005 6:24am
Forum: movies Subject: Re: there are many many other public domain movies and TV shows

Also, if the DVD you're taking it from has something besides the original footage, pay attention to removing that and only leaving in the original footage, since anything else beyond that may be copyrighted.

Reply to this post
Reply [edit]

Poster: A/V Geek Skip Date: Jun 4, 2005 6:44am
Forum: movies Subject: Re: there are many many other public domain movies and TV shows

This is correct. Extra materials, colorization of materials, even extra footage added to a film can qualify for new copyrights.

Skip

Reply to this post
Reply [edit]

Poster: pdmdb.org Date: Jul 1, 2005 7:23am
Forum: movies Subject: Check for hidden watermarks?

Does anybody know of a way to check for hidden watermarks in movies? Liketelevision.com claims to use hidden watermarks in their downloadable films and that it's against there usage policy to use them for anything other than personal use.

I was wondering if DVD producers did the same thing? All of these dollar DVDs containing public domain material are showing up, but they all claim to have a copyright on the material. Is there a way to check that they aren't including hidden watermarks or should this even be a concern?

Reply to this post
Reply [edit]

Poster: Administrator, Curator, or StaffRob Pascual Date: Jul 2, 2005 4:22am
Forum: movies Subject: Re: Check for hidden watermarks?

There have been some DVD watermarking techiniques developed, but they seem to be mostly used for screeners sent out to film previewers. In low print runs like that, they can make individual watermarks to track down who leaked a movie. In large pressings however, there is no (economically viable) way to encode unique watermarks. It is possible that someone would encode a static watermark across an entire pressing, but I don't really see what this would accomplish, so I doubt it is a concern.

There are also very successful audio watermarking techinques, usually based on a spectrogram, that can persist through lossy encodings. However, these are also mainly used for CD previews.